JP2011070716A - Disk drive unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a device thin by using a tray also as a stabilizing member, to suppress the wobbling of an optical disk to stabilize it to enable the recording/reproduction of information, and to facilitate the loading/unloading of the optical disk. <P>SOLUTION: A thin optical disk 2 for recording/reproduction is placed on a tray and stabilizing member 1 including a clamper 8 and moved to the inside of a disk drive unit 3. The tray and stabilizing member 1 on which the thin optical disk 2 is placed is stopped at the prescribed position, a spindle motor 6 and a base 20 mounted with an optical pickup 5 are moved toward the lower part. The base 20 is lowered, and the clamper 8 pushes up the thin optical disk 2 by a magnetic force between a turntable 7 and the clamper 8 and clamps the thin optical disk 2 between itself and the turntable 7. The clamped thin optical disk 2 is rotated by the spindle motor 6 and approaches the tray and stabilizing member 1 when the rotation is stabilized, and wobbling is suppressed, stabilization is achieved, and the recording or reproduction of information is performed by the optical pickup 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention rotates a thin optical disk having flexibility and applies aerodynamic force to the thin optical disk by a stabilizing member to suppress and stabilize the surface vibration, so that either recording or reproduction of information is possible. The present invention relates to a disk drive device used in a recording / reproducing apparatus that performs such operations.

  2. Description of the Related Art Conventionally, a recording / reproducing apparatus using an optical disk has a turntable fixed to a shaft of a spindle motor provided in the apparatus, and an optical disk is placed on the turntable and rotated to write information on the optical disk. Reading is in progress. As this method, a ring-shaped hole is provided in the center of the turntable, and a ring-shaped magnet is provided in the hole, and the iron plate provided in a suspended form on a support angle inside the recording / reproducing apparatus by this magnet An optical disk placed by magnetically attracting a clamper made of a metal plate such as a metal plate is clamped. As a result, the optical disk is held in the direction of the disk mounting surface of the turntable.

  However, in the conventional method, it is possible to clamp a thin film optical disc (hereinafter referred to as a thin optical disc) of 0.3 mm or less, which is the subject of the present invention, but it is a thin optical disc. Stable rotation after clamping was not possible. In recent years, in order to use a thin optical disk, a method of stably rotating called a stabilizing member has been proposed (see Patent Document 1). There is a need for an extremely compact disk drive device that has this stabilization mechanism and also serves as a tray and a stabilization member, and its clamping method.

  In a thin optical disk drive device having flexibility, in order to record / reproduce information by rotating the thin optical disk at high speed, an aerodynamic force is applied to suppress and stabilize the surface vibration of the thin optical disk. In order to ensure the effect, a certain amount of space through which air freely flows is required on the side opposite to the stabilizing member of the thin optical disk.

  14 to 16 are diagrams showing an example of the configuration of the disk drive device using the above-described thin optical disk, in which a known tray is added to the disk drive device described in Non-Patent Document 1. FIG.

  In FIG. 14, the tray 1a is moved in the direction of the arrow indicating the movement of the tray 1a from the state of jumping out to mount the thin optical disk. The tray 1a on which a thin optical disk (not shown) is placed is accommodated, and is moved in the direction of the arrow indicating the movement of the stabilizing plate 1b under the stabilizing plate 1b in an obliquely raised state (see FIG. 15). Further, as shown in FIG. 14, the tray 1 a has a notch 1 c to the center so as not to interfere with the turntable 7 and the optical pickup 5.

  As shown in FIG. 16, the tray 1a on which the thin optical disk is placed is accommodated, and then the stabilizing plate 1b is lowered, and the thin optical disk is clamped with a clamper (not shown) to start rotation. In order to provide a space in which air can freely flow so as to obtain the effect of the stabilization plate 1b, an operation such as raising the turntable 7 clamped on the thin optical disk is performed, and the thin rotation optical disk is stably rotated by the stabilization plate 1b. Get.

  In addition, Patent Document 2 includes a disc holder at the center of the tray for mounting a card-shaped or non-circular optical disc on the tray, unlike a circular shape such as a normal CD or DVD. The clamp itself is disclosed by the prior art described above.

  However, as shown in FIGS. 14 to 16 described above, a disk drive device that loads / unloads a thin optical disk using a tray includes a stabilization plate 1b that is unnecessary for a normal optical disk device, Since a mechanism for moving the stabilizing plate 1b and a mechanism for providing a space for improving the working efficiency of the stabilizing plate 1b are required, the apparatus becomes complicated and it is difficult to reduce the thickness. Further, there is no disk drive device having a configuration in which a thin optical disk is loaded / unloaded using a tray and the tray is also provided with a stabilizing member in order to obtain stable rotation of the thin optical disk.

  The present invention solves the above-mentioned problems of the prior art, and is used in a recording / reproducing apparatus for recording / reproducing on a flexible thin optical disk. The tray also serves as a stabilizing member, and the apparatus is thin. And a thin optical disk drive device that can accurately record / reproduce information by suppressing and stabilizing the surface vibration of the optical disk, and can easily load / unload the optical disk. The purpose is to do.

  In order to achieve the above object, a disk drive device according to claim 1 of the present invention drives an optical disk to perform at least one of recording and reproduction of information on a thin optical disk having flexibility. In a disk drive apparatus that suppresses and stabilizes the surface vibration of a disk by a stabilizing member that is sandwiched and rotated by a rotating shaft of the means and applies an aerodynamic force, the optical disk is placed on the stabilizing member disposed below the optical disk. And a mechanism for loading / unloading the optical disk in and out of the apparatus by moving in a direction substantially parallel to the disk mounting surface.

  With this configuration, since the mechanism for loading / unloading the optical disk inside / outside the apparatus and the stabilizing member are combined, the apparatus can be thinned and loading / unloading of the optical disk can be facilitated.

  According to a second aspect of the present invention, there is provided a disk drive device according to the first aspect of the present invention, in which the optical disk that faces the stabilizing member is mounted on the frame on which the driving means for rotating the optical disk and the optical pickup for recording or reproducing information are mounted. It is arranged above.

  With this configuration, a space on the side where the optical disk of the stabilizing member is placed can be widened, and an aerodynamic effect can be obtained with certainty.

  According to a third aspect of the present invention, in the disk drive device according to the first or second aspect, the stabilizing member on which the optical disk is placed is provided with a disk guide portion along the outer periphery of the optical disk.

  With this configuration, the optical disk can be loaded / unloaded without dropping.

  According to a fourth aspect of the present invention, in the disk drive device of the third aspect, a guide recess for moving the optical pickup is provided in the disk guide portion.

  With this configuration, the optical pickup can be moved, and information can be recorded / reproduced without any trouble.

  According to a fifth aspect of the present invention, there is provided the disk drive device according to any one of the first and second aspects, wherein the optical disk is disposed between the center of the stabilizing member on which the optical disk is placed and the turntable provided on the rotating shaft of the drive means. It is characterized by having a clamper for sandwiching.

  With this configuration, the optical disk can be held even in a structure that serves as both a stabilizing member and a loading / unloading mechanism.

  According to a sixth aspect of the present invention, in the disk drive device according to the first aspect of the present invention, a mechanism capable of adjusting the relative position between the optical disk rotated by the driving means and the stabilizing member is provided, and the optical disk is moved by this mechanism. Then, the distance between the optical disc and the stabilizing member is adjusted when the optical disc starts to rotate and the rotation is stabilized.

  With this configuration, it is possible to perform recording / reproduction of an optical disc that is stabilized by suppressing surface shake by the stabilizing member when the rotation is stable, without sliding in contact with the stabilizing member at the start of rotation of the optical disc.

  According to a seventh aspect of the present invention, in the disk drive device according to the first aspect of the present invention, a mechanism capable of adjusting the relative position between the optical disk rotated by the driving means and the stabilizing member is provided, and the stabilizing member is moved by this mechanism. Thus, the optical disk starts to rotate, and the distance between the optical disk and the stabilizing member is adjusted when the rotation is stable.

  With this configuration, it is possible to record / reproduce the optical disc that is stabilized by suppressing the surface shake by the stabilizing member when the rotation is stable, without sliding in contact with the stabilizing member at the start of the rotation of the optical disc.

  The invention described in claim 8 is the disk drive apparatus according to claim 1, further comprising lifting means for raising the frame on which the driving means is mounted on the stabilizing member little by little alternately left and right when the optical disk is unloaded. The optical disk held between the rotation shafts of the drive means is removed from the rotation shaft.

  With this configuration, it is possible to ensure separation from the rotation shaft (turn table and clamper) of the driving means that holds the optical disk.

  The invention described in claim 9 is the disk drive device according to claim 1, further comprising a disk removing member fixed to the housing regardless of the upward movement of the frame on which the driving means is mounted when the optical disk is unloaded. It is characterized in that the optical disk is placed on the stabilizing member by bringing it into contact with the disk removing member while the frame is rising.

  With this configuration, the optical disk can be reliably placed on the stabilizing member by the disk removing member when the frame is moved up during unloading.

  According to the present invention, the tray is also used as a stabilizing member, the apparatus is thinned, and it is possible to accurately record / reproduce information by suppressing and stabilizing the surface shake of the optical disc, It is possible to easily and reliably perform loading / unloading.

The perspective view which shows schematic structure of the disk drive device in embodiment of this invention The perspective view which shows schematic structure (a), (b) of a load / unload mechanism with the disk drive device in this embodiment. (A), (b) at the time of unloading of the tray and stabilizing member in the present embodiment are a perspective view and a side view, (c), (d) at the time of loading are a perspective view, a side view, and (e). Transparent side view (A) which shows the outline of the tray and stabilization member in this embodiment is a perspective view, (b) is a perspective view which provided the guide recessed part of the optical pick-up, (c) is sectional drawing. Sectional drawing which shows a series of operation | movement (a)-(c) of the clamp mechanism in this embodiment. Sectional drawing which shows schematic structure of the clamper in this embodiment The expanded sectional view which shows the clamped state (a)-(c) in this embodiment (A) of the tray / stabilizing member showing the clamping mechanism in the present embodiment is a sectional view, (b) is a perspective view of a half thereof, (c) is a sectional view at the time of clamping, and (d) uses another clamper. Cross section The clamper support part in this embodiment is a diagram showing a schematic configuration in which (a) is a piano wire and (b) is a metal plate. The figure which shows the positional relationship (a)-(d) of the thin optical disk and tray and stabilizing member from the time of disk rotation stop to the time of rotation stabilization in this embodiment. The figure which shows another positional relationship (a)-(d) of the thin optical disk and tray and stabilization member from the time of disk rotation stop to the time of rotation stabilization in this embodiment. (A) of the drive parts provided at both ends of the base part of the disk drive device in the present embodiment is a sectional view showing when the thin optical disk is stable and (b) is when the rotation is stopped. FIG. 11 is a time chart showing the relationship between the operation of the drive unit of FIG. (A) is a perspective view, (b) is a cross-sectional view, (c) is a perspective view, and (d) is a cross-sectional view when rotation is stopped, showing the operation of the disk removing member of the present embodiment. The perspective view which shows movement of a tray in one structural example of the disk drive device using the conventional thin optical disk. The perspective view which shows the movement of a stabilization board in one structural example of the disk drive device using the conventional thin optical disk. The perspective view which shows a clamp state in the example of 1 structure of the disk drive device using the conventional thin optical disk

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1-1 is a perspective view illustrating a schematic configuration of a disk drive device according to an embodiment of the present invention. As shown in FIG. 1A, the disk drive device 3 loads / unloads the thin optical disk 2 by moving back and forth in the direction of the arrow indicating the movement of the tray / stabilizing member 1 in FIG. A spindle motor 6 and a turntable 7 are fixed to the spindle unit 4 that rotates the thin optical disk 2. Further, the clamper 8 is connected and supported to the tray / stabilizing member 1 with a margin by a supporting means (not shown) made of an elastic member or the like and is rotatably mounted.

  FIG. 1-2 shows a drive system for loading / unloading the thin optical disk 2 by moving the tray / stabilizing member 1 in and out of the disk drive apparatus, and FIGS. 1-2 (a) and (b) are left and right perspective views. It is. The tray drive motor 15 shown in FIG. 1-2 rotates, and the tray / stabilizing member 1 guided along the rail 17 by the worm gear 16 moves in the direction of the arrow shown in FIG.

  FIG. 2 is a perspective view (a) and a side view (b) of the tray / stabilizing member showing an outline of the disk drive device when unloaded, a perspective view (c), a side view (d), and a transparent side view when loaded. (E).

  1-1 and 1-2, the thin optical disk 2 having flexibility is rotated by a driving means (spindle portion 4), and an aerodynamic force is applied by the tray / stabilizing member 1. By operating, the surface shake of the thin optical disk 2 is suppressed and stabilized, and information is recorded or reproduced, and this disk drive device 3 is a tray and stable placed below the thin optical disk 2. A mechanism for loading / unloading the thin optical disk 2 in and out of the disk drive device 3 by moving it by a drive system such as a tray drive motor 15 in a direction substantially parallel to the disk mounting surface while the thin optical disk 2 is placed on the forming member 1 Is provided.

  2A and 2B show the case where the thin optical disk 2 is unloaded outside the disk drive device 3, and FIGS. 2C and 2D show the case where the thin optical disk 2 is loaded into the disk drive device 3. It is the schematic which shows the case where it did.

  With this configuration, the space on the opposite side of the tray-and-stabilizing member 1 can be widened with respect to the thin optical disk 2 in the disk drive device 3, thereby ensuring a stabilizing effect of aerodynamics. At the same time, loading / unloading of the flexible thin optical disk 2 is facilitated.

  In this embodiment, the spindle unit 4 and the optical pickup 5 are units mounted on the same frame (base unit 20). The tray / stabilizing member 1 is integrated with the clamper 8 and combined with the base portion 20 to constitute the disk drive device 3.

  Although the positional relationship between the spindle unit 4 and the optical pickup 5 needs to be held with high accuracy, the accuracy can be easily maintained by mounting on the same base unit 20. For this reason, the disk drive device 3 can be obtained by combining both the frame (base portion 20) on which the spindle unit 4 and the optical pickup 5 are mounted and the tray / stabilizing member 1 on which the clamper 8 is mounted via a position adjusting mechanism. Assemble (see FIG. 2 (e)).

  The clamper 8 is connected and supported with a margin to the tray / stabilizing member 1 via an elastic member (for example, a piano wire, a metal plate, etc.) to be described later, and is perpendicular to the tray / stabilizing member 1. It can be rotated even if it is moved a predetermined distance. Therefore, after the thin optical disk 2 is clamped between the clamper 8 and the turntable 7, the thin optical disk 2 rotates without being affected even if the distance between the turntable 7 (clamper 8) and the tray / stabilizing member 1 is changed. be able to.

  As a result, when the thin optical disk 2 starts to rotate, the distance between the tray / stabilizing member 1 is made larger than 1000 μm, and after the thin optical disk 2 is accelerated to about 4000 rpm, the distance between the tray / stabilizing member 1 and the thin optical disk 2 is less than 300 μm. By performing the operation close to the extent, it is possible to suppress and stabilize the surface shake, and this operation is an essential requirement for a thin optical disk drive (see Non-Patent Document 2).

  Also, as shown in FIG. 2 (e), in the disk drive device 3, the thin optical disk which faces the tray / stabilizing member 1 with the spindle unit 4 for rotating the thin optical disk 2 and the optical pickup 5 for recording or reproducing information. 2 is disposed above.

  This facilitates the installation of the moving mechanism of the tray / stabilizing member 1 and also allows the thin optical disc 2 to be installed on the tray / stabilizing member 1 when loading / unloading the thin optical disc 2 in / out of the disc drive 3. Can be made easier.

  3A and 3B show a schematic configuration of the tray / stabilizing member of the present embodiment, in which FIG. 3A is a perspective view, FIG. 3B is a perspective view in which a guide concave portion of an optical pickup is provided, and FIG.

  In the disk drive device 3, as shown in FIG. 3A, a bank-shaped disk guide portion 10 is provided around the disk mounting surface of the tray / stabilizing member 1. The disk guide portion 10 can prevent the thin optical disk 2 from falling from the tray / stabilizing member 1 when loading / unloading the thin optical disk 2 in / out of the disk drive device 3.

  Further, a guide recess 10a is provided in a part of the disc guide portion 10 so that the movement of the optical pickup 5 is not restricted and the recording / reproducing of information on the thin optical disc 2 is not hindered when the optical pickup 5 moves. Provided (see FIGS. 3B and 3C).

  4A to 4C show a series of operations of the clamp mechanism in the present embodiment.

  As shown in FIG. 4A, a thin optical disk 2 to be recorded / reproduced is placed on a tray / stabilizing member 1 having a clamper 8. The tray / stabilizing member 1 on which the thin optical disk 2 is placed moves to the inside of the disk drive device 3. When the tray / stabilizing member 1 on which the thin optical disk 2 is placed stops at a predetermined position inside the disk drive device 3, the base unit 20 on which the spindle motor 6 and the optical pickup 5 are mounted is not shown in the drawing. The movement starts downward (see the black arrow in the middle) (see FIG. 4B).

  When the base portion 20 is lowered to a certain position, the clamper 8 is attracted to the turntable 7 by the magnetic force generated between the turntable 7 and the clamper 8. In order to clamp the thin optical disc 2 by the disc clamping portion 31 of the turntable 7 and the clamper 8, a magnetic material (for example, a permanent magnet 34) is provided on one or both of the turntable 7 and the clamper 8. (See FIG. 5).

  As a result, the clamper 8 pushes the thin optical disk 2 and clamps the thin optical disk 2 between the clamp table 8 and the turntable 7 lowered to a predetermined position. Thereafter, as shown in FIG. 4C, the thin optical disk 2 stably clamped is rotated by the spindle motor 6, and desired data recording or data reading is performed by the optical pickup 5.

  6 (a) to 6 (c) are enlarged views showing that the thin optical disk is being clamped in the series of operations shown in FIGS. 4 (b) and 4 (c). When the base portion 20 is lowered to a certain position from the state shown in FIG. 6A and approaches the tray / stabilizing member 1, magnetic force is attracted between the turntable 7 and the clamper 8, and the thin optical disk 2 is clamped. 8 is lifted up slightly and meshed with the turntable 7 descending, and the thin optical disk 2 is clamped by both. At this time, since the clamper support portion 23 that supports the clamper 8 in a suspended form is formed of an elastic member, bending occurs as shown in FIG. 6B, and clamping by attracting magnetic force is easier. It will be a thing.

  Further, when the turntable 7 and the clamper 8 clamp the thin optical disk 2, the thin optical disk 2 is formed by the center hole 21 of the thin optical disk 2 and the convex portions 32 ′ and the concave portions 32 for meshing the turntable 7 and the clamper 8. It is possible to clamp at the center position (see FIG. 5). In addition, when clamping the thin optical disk 2, it can clamp more reliably if it is performed while rotating the turntable 7 slowly.

  Thereafter, as shown in FIG. 6 (c), the lower surface of the tray / stabilizing member 1 and the thin optical disk 2 (the surface in contact with the tray / stabilizing member 1) is stable when the thin optical disk 2 stops rotating and starts rotating. It is designed so that the descent of the base portion 20 is stopped at a predetermined position so that the distance (1000 μm to 3000 μm) does not come into contact with the tray / stabilizing member 1 until time comes.

  7A to 7D illustrate the clamping mechanism of this embodiment. FIG. 7A corresponds to FIG. 6A, and is a cross-sectional view showing a state in which the thin optical disk 2 is placed on the tray / stabilizing member 1 in the disk drive device 3, and FIG. b) shows a perspective view of the half. Although the thin optical disk 2 exists on the tray / stabilizing member 1, the thin optical disk 2 is thin in FIG.

  A clamp mechanism is provided at the center of the tray / stabilizing member 1, and this clamp mechanism is used to draw the clamper 8 provided on the tray / stabilizing member 1 toward the turntable 7 of the spindle portion (not shown). It comprises a clamper support portion 23 of an elastic member (for example, a piano wire or the like) that can be supported in a suspended manner and has a spatial degree of freedom so as not to hinder the rotation during vertical movement and disk rotation.

  At the time of loading, the clamper 8 is attracted and moved to the turntable 7 that is lowered to clamp the thin optical disk 2, but the range of movement of the clamper 8 due to the elasticity of the members of the clamper support portion 23 and the margin to support the clamper 8. Is decided. Further, the clamper support portion 23 supports the clamper 8 so that the clamper 8 is detached from the turntable 7 at the boundary of the unloading when the turntable 7 rises above the predetermined range.

  FIG. 7C corresponds to FIG. 6C and is a cross-sectional view showing a state in which the thin optical disk 2 is clamped between the clamper 8 and the turntable 7. The turntable 7 descends to clamp the thin optical disk 2 as described above, but is at a distance (1000 μm to 3000 μm) such that the clamped thin optical disk 2 does not contact the tray / stabilizing member 1.

  For this reason, there is no contact between the thin optical disk 2 and the tray / stabilizing member 1 during rotation, and the distance from the tray / stabilizing member 1 is 1000 μm to 3000 μm without surface vibration due to the effect of aerodynamic force. It can rotate stably while being held. Since there is no runout, a thin and light disc can be rotated at high speed.

  The above-described clamper 8 whose sectional view is shown in FIG. 5 has a circular shape when cut horizontally. In a state where the turntable 7 of the spindle portion is not lowered, the clamper support portion 23 (piano wire) supports the clamper 8 at the uppermost end of the concave portion 33 provided in the shaft portion 30 of the clamper 8 (FIG. 6A ), FIG. 7 (a)). However, when the turntable 7 descends and an attractive force is generated between the turntable 7 and the clamper 8 due to the magnetic force, the position of the clamper 8 rises, so that the clamper support 23 (piano wire) is separated from the support at the uppermost end. It rises without detaching from the circular part (attachment part 35 of FIG. Finally, when the thin optical disk 2 is clamped, the clamper support portion 23 (piano wire) is positioned near the lowermost end of the recess 33 (see FIGS. 6C and 7C).

  As described above, the length of the recess 33 in the direction perpendicular to the disk surface is such that the thickness of the thin optical disk 2, the timing of clamping to the spindle unit 4, and the clamper support unit 23 (piano wire) and the like do not get in the way during rotation. The clamp structure has a margin. For this reason, the clamper 8 integrated with the thin optical disc 2 and the clamper support portion 23 (piano wire) are in contact with each other when the disc is rotated and do not prevent the thin optical disc 2 from rotating, so that the thin optical disc 2 can rotate stably at high speed. Become.

  If the length of the recess 33 provided in the clamper 8 in the direction perpendicular to the disk surface is a length B (for example, 4 to 6 mm) shown in FIG. 7D, the thin optical disk 2 is rotated at a high speed (10000 rpm). Otherwise, abnormal vibration may occur. For this reason, when the length A is set as shown in FIG. 7B (for example, 1 to 3 mm), abnormal vibration is less likely to occur, and stable rotation can be obtained. Furthermore, it is possible to reduce the thickness of the device by eliminating an extra protruding portion.

  8A and 8B show a schematic configuration of the clamper support portion. As shown in FIG. 8 (a), the clamper support portion 23 is made of a piano wire 36, loosely supports the clamper 8 at the center of the tray / stabilizing member 1, and is made of the piano wire 36. Therefore, it can be realized thin, small, light and inexpensive.

  The mounting portion 35 that is loosely fitted to the concave portion 33 for supporting the clamper 8 has a diameter that allows a slightly larger spatial margin in consideration of the maximum fluctuation of the rotating shaft during disk rotation than the diameter of the concave portion 33. A circular attachment portion 35 is constructed at the center of the clamper support portion 23 (piano wire 36) so that it is smaller than the diameter of the eight shaft portions 30 and does not come out of the recess 33. Further, in order to fix the clamper support portion 23 to the tray / stabilization member 1, both end fixing portions of the clamper support portion 23 made of the piano wire 36 are fixed to the tray / stabilization member 1 with screws 37 or an adhesive.

  FIG. 8B shows an example in which the clamper support portion 23 is made of a metal plate 38 or the like. If the clamper support 23 can be fixed to the circular hole serving as the mounting portion 35 for supporting the clamper 8 in the center of the clamper support 23 and the tray / stabilizing member 1 can be fixed, it is obvious that the clamper support 23 can be manufactured without a piano wire.

  In addition, the configuration of this embodiment was made as a prototype, a thin film optical disc having a thickness of 0.1 mm was manufactured, and repeated 1000 times of clamping operations were repeated. As an experiment, a thin optical disk was placed on a tray / stabilizing member, and loading, clamping, and unloading of the thin optical disk were repeated, and the stable operation in the configuration example of this embodiment was confirmed in 1000 repeated operations. did.

  FIGS. 9A to 9D are views showing the positional relationship between the thin optical disk and the tray / stabilizing member from the time when the disk rotation is stopped to the time when the rotation is stable according to this embodiment. In addition, a disk drive device not shown in the figure has a tray / stabilizing member 1, a turntable 7 that can be moved up and down, a spindle motor 6, and an optical pickup 5 in an integrated manner. The turntable 7 (spindle motor 6) can be raised and lowered by movement by a base part moving mechanism (not shown) as movement by a relative position adjusting mechanism.

  In the disk drive device, the thin optical disk 2 is loaded from outside the apparatus, and then the thin optical disk 2 is clamped by the turntable 7 and the clamper 8 (see FIGS. 4A to 4C). In this state, for example, in the device configuration shown in FIG. At this time, since the clamper 8 has a slight movement margin due to a margin with the clamper support portion 23, the clamper 8 can move up and down while the thin optical disk 2 is clamped. The distance of the forming member 1 can be changed.

  When the turntable 7 is lowered onto the thin optical disk 2 on the tray and stabilizing member 1 as shown in FIG. 9A, the thin optical disk 2 is mounted by the turntable 7 and the clamper 8 as shown in FIG. 9B. Clamp. Thereafter, as shown in FIG. 9 (c), the disk rotation is started, and at the start of the rotation, the thin optical disk 2 is separated from the tray / stabilizing member 1 (distance: Cbd = 1000 μm to 3000 μm). And a stable rotation state with a constant rotation. As shown in FIG. 9D, the thin optical disk 2 is brought close to the tray / stabilizing member 1 to a distance Cbd ′ <300 μm. As a result, stable surface shake characteristics can be obtained, and accurate recording / reproduction can be performed. At this time, the thin optical disk 2 and the tray / stabilizing member 1 are close to each other at a distance of 80 μm to 300 μm.

  In the disk drive device, when the thin optical disk 2 is clamped and the rotation is stopped, the thin optical disk 2 hangs down in the direction of gravity from the inner periphery to the outer periphery of the disk (see FIG. 9B). Then, since the thin optical disk 2 starts rotating and the drooping of the outer periphery due to gravity is reduced by the centrifugal force, the thin optical disk 2 is prevented from drooping by the rotating centrifugal force, and the tray / stabilizing member 1 and the thin optical disk 2 are It is set as the rotation stable state which does not contact even if it makes it approach (refer FIG.9 (c)). Further, by moving the thin optical disk 2 closer to the tray / stabilizing member 1 by the movement of the relative position adjustment mechanism (white arrow in the figure) (see FIG. 9D), the amount of surface deflection due to the action of aerodynamic force is reduced. An inhibitory effect can be obtained.

  As described above, even when the tray / stabilizing member 1 is on the lower side of the thin optical disk 2, it is possible to avoid contact or adhesion and contact sliding between the thin optical disk 2 and the tray / stabilizing member 1 due to static electricity.

  FIGS. 10A to 10D are diagrams showing another positional relationship between the thin optical disk and the tray / stabilizing member from the time when the disk rotation is stopped to the time when the rotation is stable according to this embodiment. Although not shown in the figure, the disk drive device is movable up and down by a tray / stabilizing member 1 that can be moved up and down by a relative position adjusting mechanism (not shown) and a base unit moving mechanism (not shown). A turntable 7, a spindle motor 6 and an optical pickup 5 are integrated. The relative position adjusting mechanism for raising and lowering the tray / stabilizing member 1 needs to be provided with a separate drive mechanism, unlike the configuration described in FIG.

  Similarly to FIG. 9 described above, in the disk drive device, when the thin optical disk 2 is clamped and the rotation is stopped, the thin optical disk 2 hangs down in the direction of gravity from the inner periphery of the disk to the outer periphery (FIG. 10B). )reference). Then, since the thin optical disk 2 starts rotating and the drooping of the outer periphery due to gravity is reduced by the centrifugal force, the thin optical disk 2 is prevented from drooping by the rotating centrifugal force, and the tray / stabilizing member 1 and the thin optical disk 2 are It is set as the rotation stable state which does not contact even if it makes it approach (refer FIG.10 (c)). Further, by moving the thin optical disk 2 closer to the tray / stabilizing member 1 by the movement of the relative position adjustment mechanism (white arrow in the figure) (see FIG. 10D), the amount of surface deflection due to the action of aerodynamic force is reduced. An inhibitory effect can be obtained.

  Thus, even if the tray / stabilizing member 1 is on the lower side of the thin optical disk 2 as in FIG. 9 described above, sticking due to static electricity and contact sliding between the thin optical disk 2 and the tray / stabilizing member 1 are avoided. it can.

  The disk drive device shown in FIG. 11 includes a clamper 8 included in the disk drive device described above, a tray / stabilizing member 1 having a clamper support portion 23, a spindle motor 6, a turntable 7, and a base portion 20 having an optical pickup 5. In addition, the left and right first and second drive units 25 and 26 for moving the base unit 20 up and down and means for controlling the same are provided. In this configuration, the base portion 20 of the disk drive device can be moved up and down in the left and right separate states by the first and second drive portions 25 and 26.

  FIG. 11A shows a state in which the base portion 20 is lowered to the tray / stabilizing member 1, the thin optical disk 2 and the tray / stabilizing member 1 are rotated in proximity, and a recording / reproducing operation is performed. is there. FIG. 11B shows that the base 20 is lifted from the tray / stabilizing member 1, so that the turntable 7 and the clamper 8 are separated from each other, the clamped thin optical disk 2 is detached, and the tray / stabilizing member is removed. 1 shows a state of being placed on 1 and stopped rotating.

  FIG. 12 is a time chart showing the relationship between the operation of the first and second drive units 25 and 26 and the attachment / detachment of the thin optical disk 2 when the base unit 20 moves away from the tray / stabilizing member 1 when rotation is stopped. is there.

  As shown in FIG. 12, when the step of the first drive unit 25 (stepping motor) proceeds three steps, the gear 25a rotates and the left side of the base unit 20 (see FIG. 11B) slightly rises, and the tray The distance from the cum stabilizing member 1 is slightly separated (state B). Next, when the step of the second drive unit 26 (stepping motor) advances three steps, the gear 26a rotates and the right side of the base unit 20 (see FIG. 11B) slightly rises, and the tray and stabilization member The distance from 1 is slightly separated (state C).

  By repeating this alternately and raising the left and right in stages, the turntable 7 and the clamper 8 that are magnetically coupled are separated from each other. Further, the thin optical disk 2 is detached from the turntable 7 and falls onto the tray / stabilizing member 1.

  Thereby, when the base part 20 is lifted right and left at the same time, the turntable 7 and the clamper 8 are not easily detached from the thin optical disk 2 because the magnetic coupling force is strong, or the thin optical disk 2 is light and turned. By avoiding the situation where it is difficult to leave the table 7, it is possible to leave the table 7 more easily.

  When the turntable 7 and the clamper 8 are separated by the first and second drive units 25 and 26, the clamper 8 tries to rise together by the magnetic force with respect to the turntable 7 that rises. The tray / stabilizing member 1 is supported so as not to rise beyond a certain range, and when the range is exceeded, the tray / stabilizing member 1 is detached.

  The disk drive apparatus shown in FIGS. 13A to 13D is the disk drive apparatus described above provided with a component for removing the thin optical disk when unloaded. As shown in FIGS. 13A to 13D, the ring-shaped disc removing member 12 is a component attached to a fixed component 13 extending from the housing 9, and is fixed regardless of the vertical movement of the base portion 20. It does not move. As shown in FIGS. 13C and 13D, after the clamper 8 is detached from the turntable 7, when the base portion 20 further moves upward, the thin optical disk 2 is affected by static electricity due to high-speed rotation. Try to move up with the turntable 7. At this time, the fixed disk removing member 12 hits the thin optical disk 2 and applies a force to fall down.

  Accordingly, it is possible to avoid the situation where the thin optical disc 2 is light and difficult to be detached from the turntable 7, and to be surely placed on the tray / stabilizing member 1 when unloading.

  The disk removing member 12 is installed at a position that does not affect the operation of the thin optical disk 2 when the thin optical disk 2 is clamped by the turntable 7 and the clamper 8 and when the rotation is stopped or when the rotation is stable. Further, the shape of the disc removing member 12 does not have to be a ring shape, and may be any shape such as a rod shape or a plate shape as long as the thin optical disc 2 can give a force to drop down.

  The disk drive device according to the present invention has a configuration in which the tray also serves as a stabilizing member, and the device can be thinned, and the information can be accurately recorded / reproduced by suppressing and stabilizing the surface shake of the optical disk. Thus, the optical disk can be easily and surely loaded / unloaded, and is useful for a recording / reproducing apparatus that records or reproduces information on a flexible thin optical disk.

DESCRIPTION OF SYMBOLS 1 Tray and stabilization member 2 Thin optical disk 3 Disk drive device 4 Spindle part 5 Optical pick-up 6 Spindle motor 7 Turn table 8 Clamper 9 Case 10 Disc guide part 10a Guide recessed part 12 Disc removal member 13 Fixed component 15 Tray drive motor 16 Worm gear 17 Rail 20 Base portion 21 Optical disc center hole 23 Clamper support portion 25 First drive portion 25a, 26a Gear 26 Second drive portion 30 Shaft portion 31 Disc clamping portion 32, 33 Concavity 32 'Convex portion 34 Permanent magnet 35 Attachment portion 36 Piano wire 37 Screw 38 Metal plate

JP 2006-107698 A JP 2003-223755 A

News from NHK Giken No.42 (September 2008) R & D thin optical disk, Internet <http://www.nhk.or.jp/strl/publica/giken_dayori/jp2/rd-0809.html> Jpn.J.Appl.46 (2007) pp.3750-3754: High Speed Flexible Optical Disk with Cylindrically Concaved Stabilizer: Yasutomo Aman, Nobuaki Onagi, Shozo Murata, Yasunori Sugimoto, Daiichi Koide, and Haruki Tokumaru: Published June 22, 2007

Claims (9)

  In order to record and / or reproduce information on / from a flexible thin optical disk, the optical disk is held by a rotating shaft of a driving means and rotated to provide an aerodynamic force. In the disk drive device that suppresses and stabilizes the surface vibration of the disk, the disk is moved in a direction substantially parallel to the disk mounting surface while the optical disk is mounted on the stabilization member disposed below the optical disk, A disk drive apparatus comprising a mechanism for loading / unloading the optical disk inside and outside the apparatus.   2. The disk drive device according to claim 1, wherein a drive unit for rotating the optical disk and a frame on which an optical pickup for recording or reproducing information is mounted are disposed above the optical disk facing the stabilizing member. .   3. The disk drive device according to claim 1, wherein a disk guide portion along an outer periphery of the optical disk is provided on a stabilizing member on which the optical disk is placed.   4. The disk drive device according to claim 3, wherein a guide recess for moving the optical pickup is provided in the disk guide part.   3. The disc according to claim 1, further comprising a clamper that clamps the optical disc with a turntable provided on a rotation shaft of a driving unit at a central portion of the stabilizing member on which the optical disc is placed. Drive device.   A mechanism capable of adjusting a relative position between the optical disk to be rotated by the driving means and the stabilizing member, and the optical disk is moved by the mechanism to start rotation of the optical disk and stabilize the rotation when the optical disk is stabilized; 2. The disk drive device according to claim 1, wherein a distance from the member is adjusted.   A mechanism capable of adjusting a relative position between the optical disk to be rotated by the driving means and the stabilization member, and moving the stabilization member by the mechanism to start rotation of the optical disk and stabilize the rotation of the optical disk and the optical disk; 2. The disk drive device according to claim 1, wherein a distance from the stabilizing member is adjusted.   When unloading the optical disc, the optical disc is provided with lifting / lowering means for raising the frame on which the driving means is mounted on the stabilizing member little by little alternately left and right, and the optical disk held between the rotating shafts of the driving means is removed from the rotating shaft. The disk drive apparatus according to claim 1.   A disc removing member fixed to the housing regardless of the upward movement of the frame on which the driving means is mounted when the optical disc is unloaded, and the optical disc is brought into contact with the disc removing member while the frame is rising; 2. The disk drive device according to claim 1, wherein the disk drive device is placed on a stabilizing member.

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